A specific field of data stored about an individual contact within a CRM or marketing platform — such as email address, job title, lifecycle stage, or a custom field like "industry" — used to store, segment, and personalize based on information about that person.
Why it matters
Contact properties are the raw building blocks nearly everything else in a marketing platform depends on — segmentation, personalization, workflow triggers, and reporting all pull from properties, which is why maintaining clean, accurate, well-structured properties is foundational, not a minor technical detail.
In a sentence
"We added a custom contact property for 'primary use case' so we could segment onboarding emails by what each person actually signed up to do."
Related terms
- Often confused with: Segment (a contact property is a single stored field of data about a person; a segment is a group of contacts defined by specific criteria, often built using one or more contact properties).
- Synonyms: Field, custom field.